(a) Describe the operation of a vacuum sewage system. (5) (b) List the advantages of a vacuum sewage system when compared to a conventional flushing system. (4) (c) State why untreated sewage should not be allowed to stagnate. (1)
Sewage system
(a) Describe the operation of a vacuum sewage system. (5) (b) List the advantages of a vacuum sewage system when compared to a conventional flushing system. (4) (c) State why untreated sewage should not be allowed to stagnate. (1)
Sewage system
UKM Tuticorin 
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